mineralogy vs geology

mineralogy and geology both are nouns.

Word	Noun	Adjective	Verb	Adverb
mineralogy	Yes	No	No	No
geology	Yes	No	No	No

As nouns, geology is a hypernym of mineralogy; that is, geology is a word with a broader meaning than mineralogy:

mineralogy: the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them
geology: a science that deals with the history of the earth as recorded in rocks

mineralogy (noun)	geology (noun)
the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them	a science that deals with the history of the earth as recorded in rocks